Cargando…
Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water
Ammonia nitrogen is a common contaminant in water and its determination is important for environmental protection. In this paper, an electrochemical sensor based on an ultramicro interdigitated array electrode (UIAE) chip with optimized construction was fabricated with Micro-Electro-Mechanical Syste...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10059921/ https://www.ncbi.nlm.nih.gov/pubmed/36985036 http://dx.doi.org/10.3390/mi14030629 |
_version_ | 1785016991012093952 |
---|---|
author | Zhao, Haifei Li, Yang Cong, Aobo Tong, Jianhua Bian, Chao |
author_facet | Zhao, Haifei Li, Yang Cong, Aobo Tong, Jianhua Bian, Chao |
author_sort | Zhao, Haifei |
collection | PubMed |
description | Ammonia nitrogen is a common contaminant in water and its determination is important for environmental protection. In this paper, an electrochemical sensor based on an ultramicro interdigitated array electrode (UIAE) chip with optimized construction was fabricated with Micro-Electro-Mechanical System (MEMS) technology and developed to realize the detection of ammonia nitrogen in water. The effects of spacing-to-width ratio and width of the working electrode on UIAE’s electrochemical characteristics and its ammonia nitrogen detection performance were studied by finite element simulation and experiment. The results demonstrated that the smaller the spacing-to-width ratio, the stronger generation–collection effect, and the smaller the electrode width, the stronger the edge effect, which led to an easier steady-state reach, a higher response current, and better ammonia nitrogen determination performance. The fabricated UIAE chip with optimized construction showed the linear detection range of 0.15 mg/L~2.0 mg/L (calculated as N), the sensitivity of 0.4181 μA·L·mg(−1), and good anti-interference performance, as well as a long lifetime. UIAE based on bare Pt was successfully applied to ammonia nitrogen detection in water by optimizing structure, which might broaden the methods of ammonia nitrogen detection in water. |
format | Online Article Text |
id | pubmed-10059921 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100599212023-03-30 Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water Zhao, Haifei Li, Yang Cong, Aobo Tong, Jianhua Bian, Chao Micromachines (Basel) Article Ammonia nitrogen is a common contaminant in water and its determination is important for environmental protection. In this paper, an electrochemical sensor based on an ultramicro interdigitated array electrode (UIAE) chip with optimized construction was fabricated with Micro-Electro-Mechanical System (MEMS) technology and developed to realize the detection of ammonia nitrogen in water. The effects of spacing-to-width ratio and width of the working electrode on UIAE’s electrochemical characteristics and its ammonia nitrogen detection performance were studied by finite element simulation and experiment. The results demonstrated that the smaller the spacing-to-width ratio, the stronger generation–collection effect, and the smaller the electrode width, the stronger the edge effect, which led to an easier steady-state reach, a higher response current, and better ammonia nitrogen determination performance. The fabricated UIAE chip with optimized construction showed the linear detection range of 0.15 mg/L~2.0 mg/L (calculated as N), the sensitivity of 0.4181 μA·L·mg(−1), and good anti-interference performance, as well as a long lifetime. UIAE based on bare Pt was successfully applied to ammonia nitrogen detection in water by optimizing structure, which might broaden the methods of ammonia nitrogen detection in water. MDPI 2023-03-10 /pmc/articles/PMC10059921/ /pubmed/36985036 http://dx.doi.org/10.3390/mi14030629 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhao, Haifei Li, Yang Cong, Aobo Tong, Jianhua Bian, Chao Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title | Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title_full | Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title_fullStr | Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title_full_unstemmed | Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title_short | Ultramicro Interdigitated Array Electrode Chip with Optimized Construction for Detection of Ammonia Nitrogen in Water |
title_sort | ultramicro interdigitated array electrode chip with optimized construction for detection of ammonia nitrogen in water |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10059921/ https://www.ncbi.nlm.nih.gov/pubmed/36985036 http://dx.doi.org/10.3390/mi14030629 |
work_keys_str_mv | AT zhaohaifei ultramicrointerdigitatedarrayelectrodechipwithoptimizedconstructionfordetectionofammonianitrogeninwater AT liyang ultramicrointerdigitatedarrayelectrodechipwithoptimizedconstructionfordetectionofammonianitrogeninwater AT congaobo ultramicrointerdigitatedarrayelectrodechipwithoptimizedconstructionfordetectionofammonianitrogeninwater AT tongjianhua ultramicrointerdigitatedarrayelectrodechipwithoptimizedconstructionfordetectionofammonianitrogeninwater AT bianchao ultramicrointerdigitatedarrayelectrodechipwithoptimizedconstructionfordetectionofammonianitrogeninwater |